1 An electric current flows in Å an insulator B a conductor C. a broken circuit D. any circuit ? A group of pupils are gathering materials to build their electric circuit. Which matanal will allow the electricity to flow between the battery and the buzzer? A copper wire Brubber tube C. cotton spring D. wooden rod 3. Which uses electncity to move? A electric fan C. light bulb D light switch 4 Which of the following is NOT a part of a simple electric circuit? A source of electricity B conducting wire C. electromagnet D. in electric device 5. What do you call a closed continuous path through which electrons flow? A resistor C charge Ā. Which of the following serves as the Source of energy in a circuit? D. battery 17. In a circuit diagram, what does a circle with a cross inside represent? A a light bulb 8 a battery ca motor 8. What do the long straight lines represent in a circuit diagram? A motors C light bulbs 9. How is a battery represented in a circuit diagram? A a circle with a cross inside it B. a long line and a short line C. a circle with an Ni inside it D. a circle with a cross inside 10. A simple circuit has long coiled wire, 1.5 volts and a bulb Why does the bulb get dimmer A because the power supply is not enough to light the bulb brighter B. because the load is too many c. because the wire is too long D. because the wire is too short 11. Imagine a simple circuit with one 1.5 volts battery and a bulb. When the 1.5 volts battent is replaced with a 3 volts battery, what will happen? A. The bulb gets brighter. B. The bulb gets dimmer. C. The bulb stays at the same level of brightness D. Nothing has changed. 12. Which statement is correct about electric current powered by a battery? 1. It always flows clockwise II. It gets used up as it goes around the circuit III. It does not get used up as it goes around the circuit. AL B1 D. III and III 13. What needs to be done to this circuit so that the lamp lights up? A. Close the switch. B. Add another wire. C. Add another bulb or lamp. D. Add a battery and close the switch 14. Which serves as a load? A bulb B. Electric motor C. Electric appliance D. All of the above 15. The bulb in a circuit lights up when it is B closed A open
